Basic chemistry help for students and teachers

 

Interactive Chemistry Worksheets for Students

 

Periodic table

Naming compounds

Basic formula

Simple compounds

Ionic compounds 1

Ionic compounds 2

Chemical suffixes

Old chemical names

Hydrocarbons - Alkanes

Alkanes, alkenes & alkynes

Alkanols to alkanoic acids

 

Common compounds

Common formula quiz

Acids, bases and salts

Covalent compounds

Printable worksheets
 

 

Sodium metal

Sodium is an element. It is found in Group I of the Periodic table, the alkali metals. Sodium has a low density which is less than water and is very soft. You can cut sodium with a knife.

The chemical formula of sodium is Na. The symbol is derived from the Latin name natrium.

Sodium reacts violently with water producing hydrogen gas and sodium hydroxide.

Sodium and water ==> hydrogen gas and sodium hydroxide

2Na + 2H2O ==> H2 + 2NaOH

Sodium metal is stored in paraffin oil to prevent it from reacting with moisture from the air.

Sodium metal is easily oxidized and forms the sodium ion, Na+ when it reacts with other substances. This sodium ion is highly soluble in water and produces a distinctive yellow/ orange flame and emission spectral line when viewed with a spectrophotometer. This is caused by excited electrons in the sodium falling back to a lower energy level an emitting light energy in the process.